Add missing Q_REVISION

This invokable method is new in Qt 5.1/QtQuick 2.1

Change-Id: I7d0e332b52a815ac0722e39db68ef1f190534a57
Reviewed-by: Liang Qi <liang.qi@digia.com>
QQmlPlatform: rename "mac" to "osx"

Change-Id: Ie458690b8008b211785cf9dcc0312a7e25c84f6b
Reviewed-by: Jake Petroules <jake.petroules@petroules.com>
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>
Tidy up Context2D transform-related documentation.

Also adds back some images that
61d35829eed6661c1371d397bbb316ea2f636c50 removed
(4a5d31a56dfd871f3f7c5ce162885ebc870b8803 specified the wrong paths to
all but one file, which is probably why they were cleaned up).

Change-Id: Idd42bb831c97935e53ce05c69ea2691a2769f453
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Improve QtQuick Item Anchors documentation.

Change-Id: Ib47051be82df16e5d08df50b5327aba8c004f4d3
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Update 5.1.0 changelog and what's new

All the new features should now be listed in those two documents

Change-Id: Ifa17581bf589f3a18b602f8a1d10683a5e48c70d
Reviewed-by: Jens Bache-Wiig <jens.bache-wiig@digia.com>
QQmlTrace: getpid() requires unistd.h

Doesn't build on MacOS if you omit this include and uncomment
define QML_ENABLE_TRACE in qqmltrace_p.h

Change-Id: I78ed43b16a006699449202dd234e43be2f7b84fd
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
Merge remote-tracking branch 'origin/release' into stable

Change-Id: I6e060496b8c252fb4e2d5d2d40ae16bf950e2ec4
Merge "Merge remote-tracking branch 'origin/release' into stable" into refs/staging/stable
Request paint if scene changes for the canvas item

Otherwise for every scene the canvas is simply not painted anymore in the
designer. For example if you change the parent.

Change-Id: I4883eab44d73a59381230755f7caa596f2b6569f
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
Merge remote-tracking branch 'origin/stable' into dev

Change-Id: I59f34fafd795694981dd1edffca1d322657f1ae6